iio linux

#include <stdio.h>
#include <stdlib.h>
#include <linux/iio/iio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>

int main(int argc, char **argv) {
    int fd;
    struct iio_buffer *buffer;
    struct iio_channel *channel;
    struct iio_device *dev;
    struct iio_context *ctx;

    // 打开IIO设备文件
    fd = open("/dev/iio:device0", O_RDONLY);
    if (fd < 0) {
        perror("Failed to open device");
        return EXIT_FAILURE;
    }

    // 获取IIO上下文
    ctx = iio_create_context_from_fd(fd);
    if (!ctx) {
        perror("Failed to create IIO context");
        close(fd);
        return EXIT_FAILURE;
    }

    // 获取第一个设备
    dev = iio_context_get_device(ctx, 0);
    if (!dev) {
        perror("Failed to get device");
        iio_context_destroy(ctx);
        close(fd);
        return EXIT_FAILURE;
    }

    // 获取第一个通道
    channel = iio_device_get_channel(dev, 0);
    if (!channel) {
        perror("Failed to get channel");
        iio_device_free(dev);
        iio_context_destroy(ctx);
        close(fd);
        return EXIT_FAILURE;
    }

    // 读取数据
    int val;
    iio_channel_read_raw(channel, &val, 0);
    printf("Sensor value: %d
", val);

    // 清理资源
    iio_channel_free(channel);
    iio_device_free(dev);
    iio_context_destroy(ctx);
    close(fd);

    return EXIT_SUCCESS;
}